Improvement in gates



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LYMAN w. sien-anton AMES, Iowa.

Letters Patent No. 111,266, dated January`24, 1'871.

IMPROVEMENT IN GATES;

. The Schedule referred to in these LettersPatent and making part of thesame.'

To all wlhoiu it mayV concern:

Be it known that I, LYMAN WSIBLEY, of Ames, in the county of Story andState of Iowa, have invented a new and useful Improvement in Gates; andI' do hereby: declare that the following is a full, clear, and

Ienact description thereof, vwhich will enable others skilled in the artto make and use the same, reference being had to the accompanyingdrawing forming part of this specification.

This invention relates to improvements in gates, and consists in animproved'arrangement oi' means for opening and' closing the gate by theaction of the wheels cfa vehicle coming in contact with levers at theside ofthe gate, "all as hereinafter described.- Y

Figure l is a longitudinal section through the op` Ve'ratingparts, alongtheroad-bed and side elevation ive, ofthe plate attached to 'the gate,and by which it is supported on the swinging arms.

Similar letters of reference indicate, corresponding parts.

The post A, by which the gate is hinged tothe fixed post B, ispreferably made of wood, but the post C is preferably made of iron, saya fiat bar, and these Vtwo are connected by the upper bar D andthedp'wer on'e E, the one being bent upward, and the other downward,ashort distancefro'm each end, for bracing or strengthening theconnection with the posts.`

These bars and the posts are further strengthened and braced by the barsF and Gr, the one E being con-v nectedat both ends to the post A, andbent, as shown,

to join the bars D E and the other bar G, to all of which it isconnected by rivets or bolts, and the one G being in like mannerconnected by both ends to `the post (l and to the bars D and E.

This arrangement provides a very strong auddur .able frame, 'and onewhich may be cheaply constructed.

The spaces between these bars may he guarded by small'wires H, 4woven inany approved way, and the upper one maybe supported by the braces I onthe top bar ll.

, K is a counterbalancing board or plate, attached to the post A behindthe axis, to be acted on by the wind, to counteract, to some extent, theaction of the same on-the gate proper,

' The hinged post A terminates at the bottom in a connection with astrong board or plate, L, attached So tbatthe edge fronting the post Cis the lowest.

This plate is circular for the most part, andthe post is attached ataboutthe center. l Immediately behind the post the pivot-rod-M, on whichthe gate swings, passes through it.

For protecting the operating devices below, the l said'plate islprovidedwith the angesN, constituting a kind ofhood.

Y0 and l? represent a pair of arms, carrying at the outer endsfriction-rollers Q Q', and hinged at the other ends, whichv are branchedto tliepivotrodM, which is hereincliued from the Vertical line towardVthe free end of' the gate whenclosed.

R S represent a pair of' pushing-levers,pivoted to the oblique part ofthe pivotrod M, so that they and the arms O I swing in a plane obliqueto the horizontal plane.

These pushlevers are at one end in the form of a.

lquarter section of .a circle, or thereabout, andV the other ends areshortened and narrowed down, as shown clearly in fig. 2.

The circular parts are grooved ou their peripheries for carrying cordsT', which are attached to the point U.

The one attached to the leverlt extends to thel lever V, passing overthe guide-rollcr lW, and the one attached to lever-S extends to thelever X, passing over a similar roller, Y., A

These levers are suspended on pivots a., in 'recesses in the ground,protected by covers l), one on each side` ofthe gate, and the upper endsrise above the covers and spring over them, as shown, so that they will.Abe moved by thc carriage-wheels striking against d is. a spring catch,for holding the levers It S after they have been movedto open the gate.

c is a block hanging from the plate L, to prevent the rollers Q or Qfrom passingV the center ot the plate L at the time the gate arrives atthe open position.

Then the gate is closed, the levers ItS will `stand in the positionrepresented in tig. 2,-

If a carriage is then driven against one of the levers V or X, say theone V, at the right, it will be moved so as to swing the curved endofthe lever R toward it, throwing the end o' against the arm O, which can#ries the roller Q 5 this will cause the roller to move forward under.the oblique plate L and raise the gate,

which is capable of rising on the rod M, so that the latches f will bedisengaged from the notches in the post g, and this Iroller furtheracting on the plate L will swing the gate around to the open positionshown in iig. 1, where it 'will he retained by the spring d, Vbehindwhich the point of lever R willl catch when swung far lenough by theaction of lever V; at this time tlie roller Q will strike against thehanging block e, which will be conned between rollers Q and Q'.

Vhen the carriage, after passing through the'gate, strikes the lever X,the latter will be turned so as to pull the lever S around sileiently tocause'the shoulder at h to push the' spring Z back and let the lever Rfree, then the gate will be closed by the action of gravity, and thewheel Q and its arms will return to the position from which it was firstmoved by the action of the carriage-wheelon the lever V.

rlhe gate will be similarly opened and closed by a carriage passing theother way, the rgate also opentially as specified.'

ing the other way.

Having thus described my invention,

vI claim as new, and glesire to secure by Letters Patent- 1. 'lhecombination, witlr the gate, of` the oblique plate L, the swingingrollers Q VQ', levers'4 R S, and the spring 1,the said swinging rollersand the levers heilig arranged on an inclined pivot, all substantiallyasiipeciied.

2. .The combination, with thev levers R S, of the cords, "levers V V',and the guide-rolle1s XV Y, all substantially as specified. f

3. The combination, with the oblique plate TJ and the rollers Q Q', ofthe hanging block c, all, substan- LYii/IAN w. siBLnY. i

Witnesses:

J.v H. MILLER,- MILTON EvANs.

